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Cationic Polymerization - Wiley Online Library

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Last Updated: 02 August 2022

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Effect of Cationic Groups on the Selectivity of Ternary Antimicrobial Polymers

Although several studies have looked at the effect of cationic groups on the antimicrobial activity of binary AMPs, binary AMPs have no reliable and systematic review of ternary AMPs. In the ensuing study, a collection of 31 scientific amphiphilic ternary polymers containing various cationic species, such as primary amine, guanidine, and sulfonium groups, was ready to investigate the effect of cationic polymers on antimicrobial function and biocompatibility. Our findings reveal that the polymers with the ratios of the cationic groups ranging from 50 to 60%, as well as a cationic/hydrophobic ratio in the range of [1. 4—u20102] and an optimal neutral hydrophilic/hydrophobic balance, showed the highest selectivity toward mammalian cells. A lysine monomer and PEG chain were the most selective AMPs to produce the most selective AMPs, with a remarkable selectivity for HC50 and IC50 greater than 83 and 21, respectively.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/marc.202200377


Understanding Ecotoxicological Responses of Fish Embryos and Gill Cells to Cationic Polymers

In the present study, we introduce a series of fish embryo toxicity and cytotoxicity assays used to establish a baseline understanding of several key polyquaternium subgroups in animal alternative models, as well as high-quality quantitative results. To determine the effect of test material characteristics on toxicity, materials were chosen to include a variety of molecular weights and charge densities. Both chorionated and dechorionated FET assays were generally similar to published acute fish toxicity data. Toxicity could be alleviated by humic acid in a dose-u2010-dependent manner. The findings of fish gill cytotoxicity were orders of magnitude less sensitive than FET test results.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/etc.5410


Environmental hazard of cationic polymers relevant in personal and consumer care products: A critical review

One such class is Cationic polymers. So we can move forward scientifically robust analyses, we must first know the quality and limitations of recent cationic polymer experiments and to identify key sources of confusion in environmental risk assessments. To that end, we performed a critical review of the existing cationic polymer environmental effects literature to determine polymer characterization and testing methods in order to determine how these parameters may influence test interpretation. Since many polymers are listed as difficultu2010test substances, many polymers are expected to be consistent in terms of both scientific discovery and subsequent risk assessment of cationic polymers. When performing environmental toxicity assays using cationic polymers, it is recommended that OECD TG23 u201cAqueous Toxicity Testing of Difficult Toxicity Testing, Substancesu201d testing criteria be followed.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/ieam.4642

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions